<template>
  <div>
    <!--面包屑导航区-->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item><a href="/">用户管理</a></el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!--卡片视图区-->
    <el-card>
      <!--搜索与添加区域-->
      <el-row :gutter="20">
        <el-col :span="8">
          <el-input placeholder="请输入内容" class="input-with-select" v-model="queryInfo.query" clearable
                    @clear="getUserList">
            <el-button slot="append" icon="el-icon-search" @click="getUserList"></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary" @click="addDialogVisible = true">添加</el-button>
        </el-col>
      </el-row>
      <!--用户列表区-->
      <el-table :data="userlist" border stripe>
        <el-table-column type="index" label="#"></el-table-column>
        <el-table-column label="姓名" prop="username"></el-table-column>
        <el-table-column label="邮箱" prop="email"></el-table-column>
        <el-table-column label="电话" prop="mobile"></el-table-column>
        <el-table-column label="角色" prop="role_name"></el-table-column>
        <el-table-column label="状态" prop="mg_state">
          <template slot-scope="scope">
            <el-switch v-model="scope.row.mg_state" @change="userStateChanged(scope.row)">
            </el-switch>
          </template>
        </el-table-column>
        <el-table-column label="操作" width="180px">
          <template slot-scope="scope">
            <!--修改按钮-->
            <el-tooltip effect="dark" content="编辑" placement="top">
              <el-button type="primary" icon="el-icon-edit" size="mini"
                         @click="showEditDialog(scope.row.id)"></el-button>
            </el-tooltip>
            <!--删除按钮-->
            <el-tooltip effect="dark" content="删除" placement="top">
              <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeUserById(scope.row.id)"></el-button>
            </el-tooltip>
            <!--分配角色按钮-->
            <el-tooltip effect="dark" content="分配角色" placement="top" :enterable="false">
              <el-button type="warning" icon="el-icon-setting" size="mini" @click="setRole(scope.row)"></el-button>
            </el-tooltip>

          </template>
        </el-table-column>
      </el-table>
      <!--分页区-->
      <el-pagination @size-change="handleSizeChange" @current-change="handleCurrentChange"
                     :current-page="queryInfo.pagenum" :page-sizes="[1, 2, 5, 10]" :page-size="queryInfo.pagesize"
                     layout="total, sizes, prev, pager, next, jumper" :total="total">
      </el-pagination>

      <!--添加用户的对话框-->
      <el-dialog title="添加用户" :visible.sync="addDialogVisible" width="50%" @close="addDialogClosed">
        <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="70px">
          <el-form-item label="用户名" prop="username">
            <el-input v-model="addForm.username" clearable></el-input>
          </el-form-item>
          <!--密码-->
          <el-form-item label="密码" prop="password">
            <el-input v-model="addForm.password" clearable type="password"></el-input>
          </el-form-item>
          <!---->
          <el-form-item label="邮箱" prop="email">
            <el-input v-model="addForm.email" clearable></el-input>
          </el-form-item>
          <!---->
          <el-form-item label="手机" prop="mobile">
            <el-input v-model="addForm.mobile" clearable></el-input>
          </el-form-item>
        </el-form>
        <!--底部区域-->
        <span slot="footer" class="dialog-footer">
        <el-button @click="addDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="addUser">确 定</el-button>
      </span>
      </el-dialog>

      <!--修改用户的对话框-->
      <el-dialog title="修改用户" :visible.sync="editDialogVisible" width="50%" @close="editDialogClosed">
        <!--form表单-->
        <el-form  :model="editForm" label-width="70px" :rules="editFormRules" ref="editFormRef">
          <el-form-item label="用户名称">
            <el-input v-model="editForm.username" disabled clearable></el-input>
          </el-form-item>
          <el-form-item label="邮箱" prop="email">
            <el-input v-model="editForm.email" clearable></el-input>
          </el-form-item>
          <el-form-item label="手机" prop="mobile">
            <el-input v-model="editForm.mobile" clearable></el-input>
          </el-form-item>
        </el-form>
        <!--&&&&&&&&&&&&&&&&&-->
        <span slot="footer" class="dialog-footer">
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="editUserInfo">确 定</el-button>
      </span>
      </el-dialog>
      <!--分配角色的对话框-->
      <el-dialog title="分配角色"
        :visible.sync="setRoledialogVisible"
        width="50%" @close="setRoleDialogClosed">
       <div>
         <p>当前的用户：{{userInfo.username}}</p>
         <p>当前的角色：{{userInfo.role_name}}</p>
         <p>分配新角色：
           <el-select v-model="selectedRoleId" placeholder="请选择">
             <el-option
               v-for="item in rolesList"
               :key="item.id"
               :label="item.roleName"
               :value="item.id">
             </el-option>
           </el-select>
         </p>
       </div>
        <span slot="footer" class="dialog-footer">
        <el-button @click="setRoledialogVisible">取 消</el-button>
        <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
        </span>
      </el-dialog>

    </el-card>
  </div>
</template>

<script>
export default {
  name: 'Users',
  data () {
    // 验证邮箱的规则
    var checkEmail = (rule, value, cb) => {
      // 验证邮箱的正则表达式
      const regEmail = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/
      if (regEmail.test(value)) {
        // 合法的邮箱
        return cb()
      }
      ;
      cb(new Error('请输入合法的邮箱'))
    }

    // 验证手机号的规则
    var checkMobile = (rule, value, cb) => {
      // 验证手机号的正则表达式
      const regMobile = /^1[34578]\d{9}$/
      if (regMobile.test(value)) {
        // 合法的手机号
        return cb()
      }
      ;
      cb(new Error('请输入合法的手机号'))
    }

    return {
      // 获取用户列表的参数对象
      queryInfo: {
        query: '',
        // 当前的页数
        pagenum: 1,
        pagesize: 2
      },
      userlist: [],
      total: 0,
      // 控制添加对话框的显示与隐藏
      addDialogVisible: false,
      // 修改用户的对话框
      editDialogVisible: false,

      // 添加用户的表单数据
      addForm: {
        username: '',
        password: '',
        email: '',
        mobile: ''
      },
      // 添加表单的验证规则对象
      addFormRules: {
        username: [
          {
            required: true,
            message: '请输入用户名',
            trigger: 'blur'
          },
          {
            min: 3,
            max: 10,
            message: '用户名的长度在3到10个字符之间.',
            trigger: 'blur'
          }
        ],
        password: [
          {
            required: true,
            message: '请输入密码',
            trigger: 'blur'
          },
          {
            min: 6,
            max: 15,
            message: '用户密码在6~15个字符之间.',
            trigger: 'blur'
          }
        ],
        email: [
          {
            required: true,
            message: '请输入邮箱',
            trigger: 'blur'
          }, {
            validator: checkEmail,
            trigger: 'blur'
          }
        ],
        mobile: [
          {
            required: true,
            message: '请输入手机',
            trigger: 'blur'
          },
          {
            validator: checkMobile,
            trigger: 'blur'
          }
        ]
      },
      // 查询到的用户信息对象
      editForm: {},
      // 修改表单的验证规则对象
      editFormRules: {
        email: [
          {
            required: true,
            message: '请输入邮箱',
            trigger: 'blur'
          }, {
            validator: checkEmail,
            trigger: 'blur'
          }
        ],
        mobile: [
          {
            required: true,
            message: '请输入用户手机',
            trigger: 'blur'
          },
          {
            validator: checkMobile,
            trigger: 'blur'
          }
        ]
      },
      // 控制分配角色对话框的显示与隐藏
      setRoledialogVisible:false,
      // 需要被分配角色的用户信息
      userInfo:{},
      // 所有角色的数据列表
      rolesList:[],
      // 已选中的角色Id值
      selectedRoleId:''
    }
  },
  created () {
    this.getUserList()
  },
  methods: {
    async getUserList () {
      const { data: res } = await this.$http.get('users', { params: this.queryInfo })
      if (res.meta.status !== 200) {
        return this.$message.error('获取用户列表失败！')
      }
      this.userlist = res.data.users
      this.total = res.data.total
      console.log(res)
    },
    // 监听pagesize 改变的事件
    handleSizeChange (newSize) {
      console.log(newSize)
      this.queryInfo.pagesize = newSize
      this.getUserList()
    },
    // 监听 页码值改变的事件
    handleCurrentChange (newPage) {
      console.log(newPage)
      this.queryInfo.pagenum = newPage
      this.getUserList()
    },
    // 监听switch 开关状态
    async userStateChanged (userinfo) {
      const { data: res } = await this.$http.put(`users/${userinfo.id}/state/${userinfo.mg_state}`)
      if (res.meta.status !== 200) {
        userinfo.mg_state = !userinfo.mg_state
        return this.$message.error('更新用户状态失败!')
      }
      this.$message.success('更新用户状态成功！')
    },
    // 监听用户对话框的关闭事件
    addDialogClosed () {
      this.$refs.addFormRef.resetFields()
    },
    // 点击按钮，添加新用户
    addUser () {
      this.$refs.addFormRef.validate(async validate => {
        if (!validate) return
        // 发起网络请求
        const { data: res } = await this.$http.post('users', this.addForm)
        if (res.meta.status !== 201) {
          this.$message.error('添加用户失败!')
        }
        ;

        this.$message.success('用户添加成功！')
        // 隐藏添加用户的对话框
        this.addDialogVisible = false
        // 重新请求数据
        this.getUserList()
      })
    },
    // 展示编辑用户的对话框
    async showEditDialog (id) {
      const { data: res } = await this.$http.get('users/' + id)
      if (res.meta.status !== 200) {
        return this.$message.error('查询用户信息失败！')
      }
      // 数据赋值
      this.editForm = res.data
      this.editDialogVisible = true
    },
    // 监听修改用户对话框的关闭事件
    editDialogClosed() {
      this.$refs.editFormRef.resetFields()
    },
    // 修改用户信息并提交
    editUserInfo() {
      this.$refs.editFormRef.validate(async valid => {
        if (!valid) return
        // 通过了可以发起修改用户信息的数据请求
        const { data: res } = await this.$http.put('users/' + this.editForm.id, { email: this.editForm.email, mobile: this.editForm.mobile })
        if (res.meta.status !== 200) {
          this.$message.error('更新用户信息失败!')
        };

        // 成功： 1.关闭对话框 2.刷新列表 3. 提示修改成功
        this.editDialogVisible = false
        // 2.
        this.getUserList()
        // 3.提示修改成功
        this.$message.success('更新用户信息成功!')
      })
    },
    // 删除按钮触发方法
    async removeUserById(id) {
      console.log(id)
      const confirmResult = await this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).catch(error => error)
      // 如果用户确认删除，返回字符串confirm
      // 如果用户取消了删除，返回字符串cancel
      if (confirmResult !== 'confirm') {
        return this.$message.info('已取消删除')
      }
      const { data: res } = await this.$http.delete('users/' + id)
      if (res.meta.status !== 200) {
        return this.$message.error('删除用户失败!')
      };
      this.$message.success('删除用户成功！')
      // 重新请求数据
      this.getUserList()
    },
    //
    async setRole(userInfo){
      this.userInfo = userInfo;

      // 在展示对话框之前，获取所有角色列表
      const {data:res} = await this.$http.get('roles');
      if (res.meta.status !== 200) {
        return this.$message.error('获取角色列表失败!')
      }
      this.rolesList = res.data

      this.setRoledialogVisible = true;
    },
    // 点击按钮分配角色
    async saveRoleInfo(){
      if(!this.selectedRoleId){
        return this.$message.error("请选择 要分配的角色！")
      }

      const {data:res} = await this.$http.put(`users/${this.userInfo.id}/role`,{"rid":this.selectedRoleId})
      if (res.meta.status !== 200) {
        return this.$message.error("更新角色失败！")
      }

      this.$message.success("更新角色成功！")
      this.getUserList();
      this.setRoledialogVisible = false;
    },
    // 监听分配角色对话框的关闭事件
    setRoleDialogClosed(){
      this.selectedRoleId = '';
      this.userInfo = {};
    }

  }
}
</script>

<style lang="less" scoped>

</style>
